Today is Diwali day, and coming from the darkness to the light is celebrated by Hindu devotees.
Hindus celebrate this great day commemorating the God Vishnu's defeat of the Asura named Naragasura. On this day, Hindus engage the religious activities and light lamps with a single thought, may this light spread throughout everyone's life in the world.
Besides that, Another ritual of Diwali is to they light a series of lights representing the triumph of dharma by defeating the unrighteousness.